The squid is an internet proxy server that can be used within a network to distribute an internet connection to all the computers within the network. One central computer is connected to the internet through any means such as dial-up, cable modem, ISDN, DSL, or T1, runs squid, and thus acts as the firewall to the internet. Because it is a proxy, it has the capabilities to log all user actions such as the URLs visited. There are many features that can be configured in squid.

Many times it's required to keep an eye on squid log to see who is accessing what for this there is a script (SqStat) which allows to look through active squid users connections using web browser. It use cachemgr protocol to get information from squid proxy server.